_
41
_
⑤
Run the engine at load for about 10 minutes to dry the turbocharger and check that engine
output has recovered.
If the output has not recovered, repeat the above cleaning cycle 3 or 4 times.
If the output still has not recovered, consult your Yanmar dealer or distributor.
⑥
Clean the pre-cleaner with detergent, dry it
and install it to the blower air inlet.
Replace the pre-cleaner(filter), if broken.
（
6
）
Replacing the Fuel Filter Element
Replace the fuel filter element periodically
before there is clogging and the fuel flow is
reduced.
①
Close the fuel cock of the fuel tank.
②
Remove the drain plug and discharge the
fuel oil in the fuel filter. (put a pan under the
drain to catch the fuel)
③
Loosen center bolt of the filter, remove the
lower case, and replace the element.
④
Bleed air the fuel system. (See 3.2.1(2))
（
7
）
Inspecting and Replacing
Anticorrosive Zinc
The timing for replacing anticorrosive zinc varies
depending on the characteristics of the sea-
water and operational conditions.
Inspect the zinc periodically and remove the
corroded area on the surface.
Replace the anticorrosive zinc when it has
decreased to less than 1/2 of the original
volume. If replacement of zinc is neglected and
operation is continued with a small volume of
anticorrosive zinc, corrosion of the seawater
cooling system will occur and water leakage or
parts breakage will result.
Do not pour a large quantity of
blower cleaning agent or fresh
water in at once. The blower may
be broken or water-hammer may
occur.
Blower wash agent (4
)
Yammar P/N
974500-00400
Fuel filter element
Yammar P/N
41650-550810
Drain plug
Center bolt
Fuel oil filter
Center bolt
Element
Rubber packing
Sticker
Anticorrosive
zinc
Plug
ZINC
The label shown in the figure is stuck on
the plugs which have the anticorrosive
zinc.
[NOTICE]
